He doesn't suck, but he did not play well his last two years in Green Bay and his half of season in Washington.
He was taking really bad angles on deep passes and was late to come over in coverage. His run defense was really bad, missed tackles, diving at feet and he generally seemed hesitant in his play.
He always had a game or two like he did in Washington. His first pick was a perfect example, late on coverage, but the throw was floated right to him, now he made a good catch and run after, but if he was facing an even average QB on that play, the pass is completed for a 15-20 yard gain.
I'm not going to get into the who is better, Clinton-Dix or Amos. It's been argued non stop for the past 5 months or whatever. I can say after 3 games, I'm pretty happy with Amos, really sure tackles so far and the middle of the field deep has been a no go for opposing qb's.
Personally I really like HaHa, he seemed like a really cool dude when he was with the Packers and does a lot of really good off the field, I think he still has some things going in Green Bay still.